Yamaha WXC 50 can't use as action?

Hi, i am new here.
I have connected a Yamaha Music Cast Wxc 50 to HA.
It is perfeclty working using input (not showed on the the banner, but on the menu of the banner).
Can’t undestand why I can use “power on” as trigger in automation but is not listed as action…same for sources…

Thx